#13010: module imports form a cycle instead of failing to parse -------------------------------------+------------------------------------- Reporter: MarcelineVQ | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Some issue of parsing is causing certain module imports not to respect the proper format for a module name: `modid → {conid .} conid (modules)` A module import ending in numbers or a dot may be treated as if the . or .<numbers> weren't there. I would expect these to be parse errors instead of falling back to their 'parent', that's surely vague so here's examples. Minimally: `echo "module Lib where import Lib. " > test.hs && ghc test.hs` `echo "module Lib where import Lib.123 " > test.hs && ghc test.hs` Will both result in: {{{ Module imports form a cycle: module ‘Lib’ (test.hs) imports itself }}} This is an error because it's not importing itself, it's importing Lib. or Lib.123 which are invalid module names. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13010 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler